On Sat, 11 Sep 2004, dovecot wrote:

Hello,

dovecot-1.0-test32 continuously fails on one of our customers mboxes with the following error:

Sep 11 16:27:15 web dovecot: POP3(xxxxxxxxxxxxx.de1): file mbox-sync-rewrite.c: line 360 (mbox_sync_read_and_move): assertion failed: (need_space == -mails[idx].space)

About 200 other mboxes are working perfectly on the same server. Where should I start looking for the cause of this?

I've had a similar error at the end of July, it was fixed in -test31. It had something to do with a situation in which some imap-specific headers were already present (like when you used to run another imap daemon before) but with different record lengths. You can compare the header fields in those mailboxes, if it's pretty much the same problem, you should notice a difference between those that work and those that don't.

If it's the same kind of bug, you can get around it by removing any imap/pop3 specific headers (with something like:

egrep -v '^Header1: |^Header2: |^Etc: ' mailbox > newmailbox

... if you make sure these fields are not in bodies).

But please don't delete the originals before the problem is analysed.